7. Which of the following chemical classes does not belong to the vast group of carbohydrates? a) Polyhydroxy ketones b) Polyhalo aldehydes c) Polyamino aldehydes d) Polyhydroxy carboxylic acids
Explanation: The OH group is absent from polyamino and polyhalo aldehydes. There is no CHO or keto group in polyhydroxy carboxylic acids.
